Django Admin：引用User的ForeignKey和ManyToManyField关系的排序 [英] Django Admin: Ordering of ForeignKey and ManyToManyField relations referencing User

问题描述

我有一个使用Django的 UserProfile 来扩展内置的Django User 模型的应用程序。看起来有点像：

  class UserProfile（models.Model）：
 user = models.ForeignKey（用户，唯一= true）
＃Local Stuff 
 image_url_s = models.CharField（max_length = 128，blank = True）
 image_url_m = models.CharField（max_length = 128，blank = True）
 
＃Admin 
 class Admin：pass 
  

我已经添加了一个新类我的模型：

  class Team（models.Model）：
 name = models.CharField（max_length = 128）
 manager = models.ForeignKey（User，related_name ='manager'）
 members = models.ManyToManyField（User，blank = True）
  

它被注册到管理员：

  class TeamAdmin（admin.ModelAdmin ）
 list_display =（'name'，'manager'）
 
 admin.site.register（Team，TeamAdmin）
  

嗯，在管理界面中，当我从下拉框中选择一个经理，或者se通过多选字段，小组成员按照用户数字ID进行排序。对于我的生活，我不知道如何得到这些排序。

我有一个类似的课程：

  class Meta：
 ordering = ['name'] 
  

这很棒！但是我不会拥有用户类，当我在 UserAdmin 中尝试这个技巧时：

  class Meta：
 ordering = ['username'] 
  

我得到：

django.core.management.base.CommandError：一个或更多的模型没有验证：
events.userprofile：排序是指username，不存在的字段。

user.username 也不起作用。我可以指定，如 image_url_s 如果我想。 。 。如何告诉管理员通过 username 对用户列表进行排序？谢谢！

解决方案

一种方法是在管理员中定义一个用于Team模型的自定义表单，并覆盖 manager 字段使用具有正确排序的查询器：

  from django import 
 
 class TeamForm（forms.ModelForm）：
 manager = forms.ModelChoiceField（queryset = User.objects.order_by（'username'））
 
 class Meta ：
 model = Team 
 
 class TeamAdmin（admin.ModelAdmin）：
 list_display =（'name'，'manager'）
 form = TeamForm 
  

I have an application that makes use of Django's UserProfile to extend the built-in Django User model. Looks a bit like:

class UserProfile(models.Model):
    user = models.ForeignKey(User, unique=True)
    # Local Stuff
    image_url_s = models.CharField(max_length=128, blank=True)
    image_url_m = models.CharField(max_length=128, blank=True)

    # Admin
    class Admin: pass

I have added a new class to my model:

class Team(models.Model):
    name = models.CharField(max_length=128)
    manager = models.ForeignKey(User, related_name='manager')
    members = models.ManyToManyField(User, blank=True)

And it is registered into the Admin:

class TeamAdmin(admin.ModelAdmin):
    list_display = ('name', 'manager')

admin.site.register(Team, TeamAdmin)

Alas, in the admin inteface, when I go to select a manager from the drop-down box, or set team members via the multi-select field, they are ordered by the User numeric ID. For the life of me, I can not figure out how to get these sorted.

I have a similar class with:

class Meta:
    ordering = ['name']

That works great! But I don't "own" the User class, and when I try this trick in UserAdmin:

class Meta:
    ordering = ['username']

I get:

django.core.management.base.CommandError: One or more models did not validate: events.userprofile: "ordering" refers to "username", a field that doesn't exist.

user.username doesn't work either. I could specify, like image_url_s if I wanted to . . . how can I tell the admin to sort my lists of users by username? Thanks!

解决方案

One way would be to define a custom form to use for your Team model in the admin, and override the manager field to use a queryset with the correct ordering:

from django import forms

class TeamForm(forms.ModelForm):
    manager = forms.ModelChoiceField(queryset=User.objects.order_by('username'))

    class Meta:
        model = Team

class TeamAdmin(admin.ModelAdmin):
    list_display = ('name', 'manager')
    form = TeamForm

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